1. Introducción
This manual provides essential information for the safe and effective operation, setup, and maintenance of your Bosch GBH 2-28 DV Professional Rotary Hammer. Please read these instructions carefully before using the tool and keep them for future reference. The Bosch GBH 2-28 DV is a powerful 850W rotary hammer designed for drilling in concrete, masonry, wood, and metal, as well as for light chiseling applications.
Figura 1: Bosch GBH 2-28 DV Professional Rotary Hammer. This image shows the complete tool with its main body, handle, and chuck.
2. Instrucciones generales de seguridad
Observe siempre las siguientes precauciones de seguridad para evitar descargas eléctricas, incendios y lesiones graves.
- Seguridad en el área de trabajo: Mantenga su área de trabajo limpia y bien iluminada. No opere herramientas eléctricas en atmósferas explosivas, como en presencia de líquidos, gases o polvos inflamables.
- Seguridad eléctrica: Los enchufes de las herramientas eléctricas deben ser compatibles con la toma de corriente. Nunca modifique el enchufe de ninguna manera. Evite el contacto del cuerpo con superficies conectadas a tierra. No exponga las herramientas eléctricas a la lluvia ni a la humedad.
- Seguridad personal: Always wear eye protection. Use hearing protection when operating the tool for extended periods. Wear a dust mask when working in dusty conditions. Dress properly; avoid loose clothing or jewelry.
- Uso y cuidado de herramientas eléctricas: No fuerce la herramienta eléctrica. Utilice la herramienta eléctrica correcta para su aplicación. Desconecte el enchufe de la fuente de alimentación antes de realizar cualquier ajuste, cambiar accesorios o guardar la herramienta eléctrica.
- Servicio: Haga que su herramienta eléctrica sea reparada por un técnico calificado utilizando únicamente piezas de repuesto idénticas.
- Embrague de sobrecarga: The tool is equipped with an overload clutch for user and tool protection in case of a jammed drill bit. If the drill bit jams, the drive to the drill spindle is interrupted. Due to the forces that occur, always hold the power tool firmly with both hands and assume a secure stance.
3. Componentes sobreview
Familiarize yourself with the main components of your Bosch GBH 2-28 DV Rotary Hammer.
- SDS-plus Tool Holder
- Parada de profundidad
- Mango auxiliar
- Selector de modo (perforación, perforación con percusión, cincelado)
- Rotation Stop Button (for chiseling)
- Gatillo de velocidad variable
- Lock-on Button for Continuous Operation
- Cable de alimentación
- Active Vibration Control System
Figura 2: Auxiliary Handle and Depth Stop. This image highlights the ergonomic auxiliary handle and the depth stop mechanism, crucial for controlled drilling.
4. Configuración
4.1 Colocación del mango auxiliar
The auxiliary handle (3) allows for secure two-handed operation and can be rotated to any position for optimal working posture.
- Afloje el mango auxiliar girándolo en sentido antihorario.
- Slide the handle over the chuck and position it as desired.
- Tighten the auxiliary handle by turning it clockwise until secure.
4.2 Instalación del tope de profundidad
The depth stop (2) is used to set a precise drilling depth.
- Insert the depth stop into the opening on the auxiliary handle.
- Ajuste el tope de profundidad a la profundidad de perforación deseada. La distancia desde la punta de la broca hasta el extremo del tope indica la profundidad de perforación.
- Ensure the auxiliary handle is securely tightened to hold the depth stop in place.
5. Instrucciones de funcionamiento
5.1 Conexión de alimentación
Asegúrese de que el volumen de la herramienta eléctricatage rating matches your local power supply before plugging it in. The tool operates on a standard corded electric power source.
5.2 Inserting and Removing SDS-plus Drill Bits
The SDS-plus tool holder (1) allows for quick and tool-free accessory changes.
- Insertando: Clean the shank of the drill bit and apply a thin layer of grease. Insert the drill bit into the tool holder with a rotating motion until it locks. Pull on the drill bit to check if it is securely locked.
- Eliminando: Pull back the locking sleeve of the SDS-plus tool holder and remove the drill bit.
5.3 Selección del modo de funcionamiento
Use the mode selector switch (4) to choose the desired operating mode:
- Perforación (solo rotación): For drilling in wood, metal, ceramics, and plastic. Set the switch to the drill symbol.
- Hammer Drilling (Rotation with Hammer Action): For drilling in concrete and masonry. Set the switch to the hammer drill symbol.
- Chiseling (Hammer Action Only with Rotation Stop): For light chiseling work. Set the switch to the chisel symbol. Press the rotation stop button (5) to lock the chisel in the desired position.
Nota: Change the operating mode only when the tool is switched off to prevent damage.
5.4 Control de velocidad variable
The variable speed trigger (6) allows for infinitely variable speed adjustment. The harder you press the trigger, the higher the rotational speed. This feature is useful for starting holes precisely and adapting to different materials.
5.5 Continuous Operation (Lock-on Button)
For continuous operation, press the variable speed trigger (6) and then press the lock-on button (7). To switch off, press the variable speed trigger again.
6. Mantenimiento
El mantenimiento regular garantiza la longevidad y el rendimiento óptimo de su martillo perforador.
- Limpieza: Keep the ventilation openings of the power tool clean to prevent overheating. Regularly clean the SDS-plus tool holder to remove dust and debris.
- Lubricación: Apply a thin layer of grease to the shank of SDS-plus accessories before insertion to ensure smooth operation and reduce wear.
- Escobillas de carbón: If the tool shows excessive sparking or reduced performance, the carbon brushes may need inspection or replacement. This should be done by a qualified service technician.
- Almacenamiento: Guarde la herramienta en un lugar seco y seguro, fuera del alcance de los niños.
7. Solución de problemas
| Problema | Posible causa | Solución |
|---|---|---|
| La herramienta no arranca. | No power supply; faulty power cord/plug; defective switch. | Check power connection. Inspect power cord/plug for damage. If switch is defective, contact service. |
| Rendimiento de perforación reducido. | Worn drill bit; incorrect operating mode; carbon brushes worn. | Replace drill bit. Select correct operating mode. Have carbon brushes checked by service. |
| Hammer action not engaging. | Incorrect operating mode; tool holder dirty. | Ensure hammer drilling mode is selected. Clean SDS-plus tool holder. |
| Tool stops during operation (overload clutch). | Drill bit jammed in workpiece. | Release the trigger, remove the tool from the workpiece, and clear the obstruction. Resume operation carefully. |
8. Especificaciones técnicas
| Modelo | GBH 2-28 DV |
| Número de modelo del artículo | 0 611 267 1K0 |
| Marca | Bosch |
| Entrada de potencia | 850 vatios |
| Fuente de poder | Eléctrico con cable |
| Velocidad máxima de rotación | 850 RPM |
| Ampanhelo | 14 Amps |
| Portaherramientas | SDS-plus |
| Drilling Capacity (Concrete, Hammer Drill Bits) | 4 - 28 mm |
| Drilling Capacity (Masonry, Core Cutters) | Hasta 68 mm |
| Capacidad de perforación (madera) | Hasta 30 mm |
| Capacidad de perforación (metal) | Hasta 13 mm |
| Peso del artículo | 4.9 kilogramos |
| Dimensiones del producto (LxAnxAl) | 36 x 45 x 11.5 cm |
| Componentes incluidos | Auxiliary handle, carrying case, depth stop 210 mm |
9. Garantía y soporte
Bosch power tools are manufactured to the highest quality standards and undergo rigorous testing. This product comes with a standard manufacturer's warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Bosch websitio.
For technical assistance, spare parts, or service, please contact Bosch customer support:
- Número de atención al cliente: 18004258665 (as per manufacturer info)
- Fabricante: Bosch Power Tools (China) Ltd.
- Importador/Envasador: Bosch Ltd., Apartado Postal No: 3000, Hosur Road, Adugodi, Bangalore - 560030, India.
Always provide the model number (GBH 2-28 DV) and item model number (0 611 267 1K0) when contacting support for efficient service.
